The document outlines the Java language specifications related to variables, defining them as storage locations with types that can be primitive or reference types. Variables of primitive types hold exact values, whereas reference types can hold a null reference or point to instances of their class or subclasses. It also clarifies that variables themselves are not objects and includes references for further reading.

3. Yes Or
NO!

4. Java Language
Specifications

5. :: DEFINITIONS ::
4.12 Variables: A variable is a storage
location and has an associated type,
sometimes called its compile-time type,
that is either a primitive type (§4.2) or a
reference type (§4.3).

6. :: DEFINITIONS ::
4.12.1 Variables of Primitive Type: A
variable of a primitive type always holds a
value of that exact primitive type.

7. :: DEFINITIONS ::
4.12.2 Variables of Reference Type: A
variable of a class type T can hold a null
reference or a reference to an instance
of class T or of any class that is a subclass of
T.

8. Are
Variables
Objects?
NO!

9. Byte
Float
Integer
Type Wrapper Classes
Long
Character
Double

10. Boxing
valueOf( type arg )
AutoBoxing
intValue( )
charValue( )
booleanValue( )
Unboxing

11. :: EXAMPLE ::
Integer x , y ;
x = 12 ;
y = 15 ;
System.out.println( x + y );

12. Are
Variables
Objects?
NO!
NO!
NO!

13. :: REFERENCES ::
http://java.sun.com/docs/books/jls/download/langspec-3.0.pdf
http://www.javaranch.com/campfire/StoryCups.jsp
http://www.javaranch.com/campfire/StoryPassBy.jsp
http://java.sun.com/docs/books/tutorial/java/data/numberclasses.html
http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html
http://forums.sun.com/thread.jspa?threadID=5387311

14. Discussion

15. Thanks